linux-kernel - Re: [tip:locking/core] locking/rwsem: Remove arch specific rwsem files

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Date:   Wed, 3 Apr 2019 14:47:51 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     mingo@...nel.org, dave@...olabs.net, arnd@...db.de,
        tim.c.chen@...ux.intel.com, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org, bp@...en8.de, hpa@...or.com,
        tglx@...utronix.de, torvalds@...ux-foundation.org,
        will.deacon@....com, paulmck@...ux.vnet.ibm.com, longman@...hat.com
Cc:     linux-tip-commits@...r.kernel.org
Subject: Re: [tip:locking/core] locking/rwsem: Remove arch specific rwsem
 files

On Wed, Apr 03, 2019 at 03:44:11AM -0700, tip-bot for Waiman Long wrote:
> diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
> index 2d686ae54681..22554c585ced 100644
> --- a/arch/x86/um/Makefile
> +++ b/arch/x86/um/Makefile
> @@ -21,7 +21,6 @@ obj-y += checksum_32.o syscalls_32.o
>  obj-$(CONFIG_ELF_CORE) += elfcore.o
>  
>  subarch-y = ../lib/string_32.o ../lib/atomic64_32.o ../lib/atomic64_cx8_32.o
> -subarch-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += ../lib/rwsem.o
>  
>  else
>  

The x86_64 um build needs this on top:

diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index 22554c585ced..33c51c064c77 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -26,8 +26,7 @@ else
 
 obj-y += syscalls_64.o vdso/
 
-subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o ../entry/thunk_64.o \
-		../lib/rwsem.o
+subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o ../entry/thunk_64.o
 
 endif